FNUS72 KJAX 081331
FWSJAX

SPOT FORECAST FOR RIVERSIDE...US FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
931 AM EDT MON JUN 8 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON JUNE 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A LOW PRESSURE SYSTEM CENTERED OVER THE GEORGIA COAST WILL GRADUALLY
WEAKEN TODAY HERALDING THE START OF A DRYING TREND. NONETHELESS...
SCATTERED SHOWERS AND STORMS WILL LIKELY IMPACT THE PRESCRIBED BURN SITE
THIS AFTERNOON AS DAYTIME HEATING INTERACTS WITH THE APPROACH OF THE
WEST COAST SEA-BREEZE AS WELL AS LINGERING EFFECTS FROM THIS LOW PRESSURE
SYSTEM. RELATIVE HUMIDITY WILL REMAIN ABOVE CRITICAL LEVELS. WINDS WILL BE
LESS THAN 15 MPH EXCEPT NEAR THUNDERSTORMS.

.TODAY...

SKY/WEATHER.........BECOMING PARTLY CLOUDY (45-55 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS FROM AROUND MIDDAY ONWARD.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........50 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 8 MPH IN
                    THE LATE MORNING AND AFTERNOON.
LAL.................1 UNTIL 1100...THEN 2 UNTIL 1400...THEN 3.
MIXING HEIGHT.......300-1700 FT AGL INCREASING TO 3200-4900 FT AGL
                    LATE IN THE MORNING.
MIXING WINDS........WEST 5 TO 13 MPH.
DISPERSION INDEX....36.
CHANCE OF PCPN......30 PERCENT.

TIME (EDT)      11 AM  1 PM   3 PM   5 PM
SKY (%).........45     45     57     57
WEATHER COV.....S CHC  CHANCE CHANCE CHANCE
WEATHER TYPE....TSTORM TSTORM TSTORM TSTORM
TEMP............83     87     88     86
RH..............61     53     51     53
20 FT WIND......SW 6   SW 7   SW 8   SW 8
20 FT WIND GUST.10     10     10     10
MIX HGT (FT)....3300   3300   4900   3200
TRANSPORT WIND..SW 10  SW 10  W 13   W 12
CHC OF PCPN (%).20     30     40     40
LAL.............2      2      3      3

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (40-50 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS EARLY IN THE
                    EVENING.
MIN TEMPERATURE.....AROUND 68.
MAX HUMIDITY........99 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH IN THE EVENING BECOMING
                    LIGHT.
LAL.................3 UNTIL 2000...THEN 2 UNTIL 2400...THEN 1.
MIXING HEIGHT.......1500-3200 FT AGL DECREASING TO 300-1000 FT AGL
                    LATE IN THE EVENING.
MIXING WINDS........WEST 5 TO 12 MPH.
DISPERSION INDEX....2.
CHANCE OF PCPN......20 PERCENT.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........57     57     57     57     46     46
WEATHER COV.....CHANCE S CHC  S CHC
WEATHER TYPE....TSTORM TSTORM TSTORM NONE   NONE   NONE
TEMP............84     80     76     74     72     70
RH..............57     67     78     83     88     92
20 FT WIND......SW 8   S 6    S 5    S 3    SW 3   W 3
20 FT WIND GUST.10     10            5      5      5
MIX HGT (FT)....3200   1500   1500   900    300    300
TRANSPORT WIND..W 12   W 9    W 9    W 6    W 5    W 5
CHC OF PCPN (%).40     20     20     10     10     10
LAL.............3      2      2      2      1      1

.TUESDAY...

SKY/WEATHER.........BECOMING PARTLY CLOUDY (45-55 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 91.
MIN HUMIDITY........47 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 8 MPH.
LAL.................1 UNTIL 1400...THEN 3.
MIXING HEIGHT.......1000-1700 FT AGL INCREASING TO 3500-5300 FT AGL
                    LATE IN THE MORNING.
MIXING WINDS........NORTH 8 TO 12 MPH SHIFTING TO THE EAST AROUND
                    10 MPH LATE IN THE AFTERNOON.
DISPERSION INDEX....65.
CHANCE OF PCPN......20 PERCENT.

$$
FORECASTER...ZAPPE
REQUESTED BY...JOHN MASTERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090608.RIVER.01/JAX